irri - knoc
- j bearing bit
- J pin running tool
- J slot type running tool
- J-chain
- J-exon
- J-integral
- J-integral (fracture) criterion
- J-integral (fracture) criterion
- J-module
- j-series journal bit
- J-tool
- J.P.O.S.
- JAA
- jabber control
- jacalin
- jack
- jack board
- jack box
- jack for calling attending personnel
- jack force
- jack house
- jack knife
- jack switch
- jack up drilling rig
- jack-bus
- jack-in
- jack-mounting
- jack-post braces
- jack-up drilling rig
- jack-up service rig
- jacket
- jacket cooling
- jacket inserter
- jacket-cooled mould
- jacket-type production rig
- jacketed fiber
- jacketed microfiche
- jacketed microfilm
- jacketing
- jacketing tape
